ex1.bash : res=650217205854
	time: 0:01.80 real, 1.78 user, 0.01 sys
	context-switch:	28+1, page-faults: 0+190

ex12-c : res=650217205854
	time: 0:00.00 real, 0.00 user, 0.00 sys
	context-switch:	0+1, page-faults: 0+75

ex2.bash : res=20394514442037
	time: 0:01.56 real, 1.55 user, 0.01 sys
	context-switch:	16+1, page-faults: 0+196

ex12-c : res=20394514442037
	time: 0:00.00 real, 0.00 user, 0.00 sys
	context-switch:	0+1, page-faults: 0+74